Guilsfield is a village and community in Montgomeryshire, Powys, Wales. It lies beside Guilsfield Brook about three miles north of Welshpool. It is located on the B4392 road and a disused branch of the Montgomery Canal starts nearby. The community has an area of 30.01 km2 (11.59 sq mi) and had a population of 1,640 in 2001. rising to 1,727 in 2011. The community includes the villages of Burgedin and Groes-lwyd. The village itself had a population of about 1,220.